AP EAMCET201724 Apr 2017Morning ShiftMathematicsPermutation and CombinationActual
If the number of subsets with 8 elements from the set A = a₁, a₂, a₃, a_n , n 8 , is five times the number of such subsets containg a₄ , then n=
Options
- A35
- B40
- C45
- D0
Correct answer
B. 40
Step-by-step solution
No solution. Refer to answer key.